After you got 5 top tiers doing nothing to Imu with their combined blow and Xebec slicing Imu up being useless. Imu completely bullied Xebec here.
Not really.
You can have 55 top tiers attacking Imu, if they dont know how to counter his regen or if there is a certain condition they didn't fulfill, it means nothing. Xebec fought Imu in 1vs1 just fine. After that he was baited with his wife and kid and allowed Imu to tag him.
When certain people tag you, it is over. This is nothing unusual, just a delayed demise.
Nothing we see here from Imu looks impressive. Purely regen merchant with close to 0 other impressive showings.
This is just a standard procedure for those who are destined to fail in the past so the Mugibois can succeed in the present.
I explained this in the Irrelevant background characters thread, they were never designed to succeed.